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  4. QT 5.12.4 Mingw vs MSVC ui elements rendering when css styled
Forum Update on Monday, May 27th 2025

QT 5.12.4 Mingw vs MSVC ui elements rendering when css styled

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  • D Offline
    D Offline
    dr3mro
    wrote on last edited by
    #1

    I have an app i Qt and it works fine but when I changed from mingw to msvc 2019 the ui element rendering broke using Qt 5.12.4 windows 10 pro 1903 VS 2019 here is some photos
    3_1565531090175_2019-08-11.png 2_1565531090175_2019-08-11 (3).png 1_1565531090175_2019-08-11 (2).png 0_1565531090175_2019-08-11 (1).png

    Any tips or help what should I do ? The application is linked statically to Qt 5.12.4 using Both toolchains with identical config

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    • mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi
      We have to find out where it fails.
      Do you have a minimal example of using a style sheet and VS 2019 that shows
      this? ( so we can test locally if its reproducible )

      Also, is it possible to try with an official Qt version (Dynamic ) and see
      if it stills draws like that?

      It could be the static Qt or visual studio 2019 itself.
      Its hard to guess at.

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      • JKSHJ Offline
        JKSHJ Offline
        JKSH
        Moderators
        wrote on last edited by
        #3

        This is a known bug in MSVC 2019:

        • https://bugreports.qt.io/browse/QTBUG-75280
        • https://developercommunity.visualstudio.com/content/problem/547684/visual-studio-20191602-generator-incorrect-code-wi.html

        You will need to wait for Microsoft to release a fix.

        In the meantime, I suggest you continue using MinGW or use MSVC 2017. (MSVC 2017 is compatible with MSVC 2019)

        Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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